Can you expound a bit? What can they do with those heat? For rotating turbines, I think they will require steam, so it is not helpful here. There might be other applications heating nearby homes. But, that's extremely unlikely. It is just like bitcoin argument where one party says they can use those waste heat to heat the home.
Waste heat can be recovered by a heat pump in various ways, then recirculated either within a building (this is just typical HVAC heat recovery) or between buildings (district heating system) as supply system heating.
The heat is transferred to the existing district heating system by a heat exchanger. District heating is by far the most common mode of heating in Finnish urban areas.
Correct me if I am wrong.